Strange shift on pixel row while compressing video with alpha channel
Leander : "Your trying to save unassociated rgba in a format, that doesn't support the alpha channel (AVI). Render it with a not transparent background: choose RGB, goto Properties > Render > Film and uncheck transparent."

"This is not a bug. You have to choose a format which supports alpha channels. There are not builtin video formats with alpha in Blender currently (such as Prores), so you have to choose an image format such as PNG, TIFF, EXR, DPX with RGBA selected. It will render to an image sequence."

So  the bug where due to the use of transparency and the RGBA mode on a file format that don't support it.

If you have issues rendering with transparency, i tried to render with alpha using ffmpeg video with the codec HuffYUV, PNG, and video codec #1 which support RGBA but either the quality was too bad either it has the bug that i came for in the first place. 
It seems like Blender don't have any proper way to render with an alpha mask. i will edit this comment if i find a proper way to do it without using another soft, anyway i'll solve this subject because the main problem is solved.